function pltfast(x,tit,ylv,xlv,varargin); 
% function pltfast(x,tit,ylv,xlv,varargin); 
% Fast plot of the elements of x (T x nv) and allowing to 
% tit       title 
% ylv       vector of y-axis limits 
% xlv       vector of x-axis limits
% varargin variable length for legends
% any option not to be use leave empty 
figure; 
plot(x); 
if isempty(tit) == 0; 
    title(tit); 
end
if isempty(ylv) == 0;
    YLim(ylv);  
end
if isempty(xlv) == 0;
    XLim(xlv);  
end
if nargin > 4; 
    legend( varargin{:} ); 
end; 

